I have been looking for a Sonoff product that can replace what I currently have installed and don't see anything available. I have two wall switches installed side by side. One is a toggle switch which is a 3 way switch that is also controlled on the second floor. Either switch will turn the light on or off. The other switch installed is a standard dimmer switch. I am not opposed to changing the size of the receptical if I have to.
Thanks in advance.
Lots of posts here on this subject. Use search.